Can anyone help - I have a boy who will be getting on for 3 when the next one is born. I have investigated double buggies and they seem to have weight limits. How suitable have people found them for 3 yr olds, and how much life will it have? Any recommendations for a particular one? Not so keen on board for pram which is another option - my toddler is likely to run off, plus we want something that folds up for hols. Any other options that anyone knows about? Please let me know, and where to buy. Thanks.